Self Tapping Inserts Xinxiang Beiou Technology Co. Ltd. Base Info Model NO.:Metric,UNF,UNCMaterial:Stainless SteelType:Countersunk HeadGroove:Special ShapeHS Code:7318190000 Description Pre:Stainless Steel 304 Flat Plain Fender Washer Spring Washer Next:Blind Threaded Standoffs - Types Bso, Bsoa, Bsos - Metric